Hello can someone help me to solve this.

I do not even know how to start: D

Giving is a quadratic function f (x) and g (x). Determine the slope at the point x = 4!

f (x) = 2x² + 4x + 2

g (x) = 0.25 (x-2) 2 - 4

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f (x) = 2x² + 4x + 2

1.

Derivation => f `(x) = 4x + 4

Gradient at the point x = 4

=> f` (4) = 4 * 4 + 4

=> f` (4) = 20

g (x) = 0.25 (x-2) 2 - 4

What you say about?

JustinRunyon
Oct 4, 2018

edited by
JustinRunyon
Oct 8, 2018

edited by JustinRunyon Oct 8, 2018

edited by JustinRunyon Oct 8, 2018

edited by JustinRunyon Oct 8, 2018

edited by JustinRunyon Oct 8, 2018

#1**+2 **

Are you doing derivatives yet?

Derivative will tell you the slope of the curve at the given point

First one derivative = 4x + 4 put x = 4 in there to get slope =20

Second one

.25 (x^2-4x+4) -4

.25x^2 -x -3 ----------------> derivative : .5x -1 at x= 4 .5(4)-1 = 1 = slope

ElectricPavlov
Oct 4, 2018